<template>
  <main
    class="site-content"
    :class="{ 'site-content--tabs': $route.meta.isTab }"
  >
    <!-- 主入口标签页 s -->
    <el-tabs
      v-if="$route.meta.isTab"
      v-model="mainTabsActiveName"
      :closable="true"
      @contextmenu.native.prevent="openContextMenu($event)"
      @tab-click="selectedTabHandle"
      @tab-remove="removeTabHandle"
    >
      <el-dropdown class="site-tabs__tools" :show-timeout="0">
        <i class="el-icon-arrow-down el-icon--right"></i>
        <el-dropdown-menu slot="dropdown">
          <el-dropdown-item @click.native="tabsCloseCurrentHandle"
            >关闭当前标签页</el-dropdown-item
          >
          <el-dropdown-item @click.native="tabsCloseOtherHandle"
            >关闭其它标签页</el-dropdown-item
          >
          <el-dropdown-item @click.native="tabsCloseAllHandle"
            >关闭全部标签页</el-dropdown-item
          >
          <el-dropdown-item @click.native="refresh()"
            >刷新当前标签页</el-dropdown-item
          >
        </el-dropdown-menu>
      </el-dropdown>
      <el-tab-pane
        v-for="item in mainTabs"
        :key="item.name"
        :label="item.title"
        :name="item.name"
      >
        <el-card :body-style="siteContentViewHeight">
          <iframe
            v-if="item.type === 'iframe'"
            :src="item.iframeUrl"
            width="100%"
            height="100%"
            frameborder="0"
            scrolling="yes"
          >
          </iframe>
          <keep-alive v-else>
            <router-view v-if="item.name === mainTabsActiveName" />
          </keep-alive>
        </el-card>
      </el-tab-pane>
    </el-tabs>
    <!-- 主入口标签页 e -->
    <el-card v-else :body-style="siteContentViewHeight">
      <keep-alive>
        <router-view />
      </keep-alive>
    </el-card>
    <!-- tag右键操控窗口 -->
    <div v-show="contextMenuVisible">
      <ul :style="{left:left+'px',top:top+'px'}" class="contextmenu">
          <li><el-button type="text"  @click.native="ContextMenuRemoveTabHandle(ContextMenuTabName)" size="mini">关闭当前页</el-button></li>
          <li><el-button type="text"  @click.native="ContextMenutabsCloseOtherHandle(ContextMenuTabName)" size="mini">关闭其它页</el-button></li>
          <li><el-button type="text" @click.native="tabsCloseAllHandle" size="mini">关闭全部页</el-button></li>
          <li><el-button type="text" @click.native="refresh()" size="mini">刷新当前页</el-button></li>
      </ul>
    </div>
  </main>
</template>

<script>
import { isURL } from "@/utils/validate";
export default {
  inject: ["refresh"],
  data() {
    return {
      contextMenuVisible: false,
      ContextMenuTabName: "",
      top:50,
      left:50,
    };
  },
  computed: {
    documentClientHeight: {
      get() {
        return this.$store.state.common.documentClientHeight;
      },
    },
    menuActiveName: {
      get() {
        return this.$store.state.common.menuActiveName;
      },
      set(val) {
        this.$store.commit("common/updateMenuActiveName", val);
      },
    },
    mainTabs: {
      get() {
        return this.$store.state.common.mainTabs;
      },
      set(val) {
        this.$store.commit("common/updateMainTabs", val);
      },
    },
    mainTabsActiveName: {
      get() {
        return this.$store.state.common.mainTabsActiveName;
      },
      set(val) {
        this.$store.commit("common/updateMainTabsActiveName", val);
      },
    },
    siteContentViewHeight() {
      var height = this.documentClientHeight - 50 - 30 - 2;
      if (this.$route.meta.isTab) {
        height -= 40;
        return isURL(this.$route.meta.iframeUrl)
          ? { height: height + "px" }
          : { minHeight: height + "px" };
      }
      return { minHeight: height + "px" };
    },
  },
  mounted() {
    // 当有其他单机事件时关闭tags右键弹框
    window.addEventListener('click', (e) => {
        this.contextMenuVisible = false
    })
  },
  methods: {
    // tabs右击事件
    openContextMenu(e) {
      
      if (e.target._prevClass.indexOf('el-tabs__item is-top') >= 0) {
        e.preventDefault(); //防止默认菜单弹出
        this.left = e.clientX + 12;
        this.top = e.clientY + 15;
        this.contextMenuVisible = true;
        this.ContextMenuTabName = e.target.id.replace('tab-','');
      }
    },
    // 关闭tags右键选项卡
    closeContextMenu(){
      this.contextMenuVisible = false;
    },
    // 关闭右键选择的页面
    ContextMenuRemoveTabHandle(tabName){
      if (tabName) {
        this.removeTabHandle(tabName)
      }
    },
    // tabs, 关闭其它
    ContextMenutabsCloseOtherHandle(tabName) {
      this.mainTabs = this.mainTabs.filter(
        (item) => item.name === tabName
      );
      this.mainTabsActiveName = tabName;
    },
    // tabs, 选中tab
    selectedTabHandle(tab) {
      tab = this.mainTabs.filter((item) => item.name === tab.name);
      if (tab.length >= 1) {
        this.$router.push({
          name: tab[0].name,
          query: tab[0].query,
          params: tab[0].params,
        });
      }
    },
    // tabs, 删除tab
    removeTabHandle(tabName) {
      this.mainTabs = this.mainTabs.filter((item) => item.name !== tabName);
      if (this.mainTabs.length >= 1) {
        // 当前选中tab被删除
        if (tabName === this.mainTabsActiveName) {
          var tab = this.mainTabs[this.mainTabs.length - 1];
          this.$router.push(
            { name: tab.name, query: tab.query, params: tab.params },
            () => {
              this.mainTabsActiveName = this.$route.name;
            }
          );
        }
      } else {
        this.menuActiveName = "";
        this.$router.push({ name: "home" });
      }
      this.closeContextMenu();
    },
    // tabs, 关闭当前
    tabsCloseCurrentHandle() {
      this.removeTabHandle(this.mainTabsActiveName);
    },
    // tabs, 关闭其它
    tabsCloseOtherHandle() {
      this.mainTabs = this.mainTabs.filter(
        (item) => item.name === this.mainTabsActiveName
      );
    },
    // tabs, 关闭全部
    tabsCloseAllHandle() {
      this.mainTabs = [];
      this.menuActiveName = "";
      this.$router.push({ name: "home" });
    },
    // tabs, 刷新当前
    tabsRefreshCurrentHandle() {
      var tab = this.$route;
      this.removeTabHandle(tab.name);
      this.$nextTick(() => {
        this.$router.push({
          name: tab.name,
          query: tab.query,
          params: tab.params,
        });
      });
    },
  },
};
</script>

<style lang="scss" scoped>
.contextmenu {
 	width: 100px;
  margin: 0;
  background: #fff;
  z-index: 3000;
  position: fixed ;
  list-style-type: none;
  padding: 5px 0;
  border-radius: 4px;
  font-size: 14px;
  color: #333;
  box-shadow: 0px 0px 3px 0 rgba(0, 0, 0, 0.3);
}
.contextmenu li {
    margin: 0;
}
.contextmenu li:hover {
    background: #f2f2f2;
    cursor: pointer;
}
.contextmenu li button{
   color: #2c3e50;
}
.el-button--text {
  width: 100px;
  margin: auto;
}
</style>